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Basic network daemon library for nuqql

Project description

nuqql-based

nuqql-based is a basic network daemon library that implements the nuqql interface. It can be used as a dummy backend for nuqql, e.g., for testing or as a basis for the implementation of other nuqql backends.

Other backends using nuqql-based:

Dependencies:

  • daemon (optional): for daemonize support

Setup

You can install nuqql-based, for example, with pip for your user only with the following command:

$ pip install --user nuqql-based

If you prefer to check out this repository with git and work with the repository directly, you can install nuqql-based for your user in editable mode with the following command:

$ pip install --user -e .

Usage

Creating a nuqql backend with the nuqql-based library consists of the steps in the following boilerplate code:

from nuqql_based.based import Based
from nuqql_based.callback import Callback

# create a new backend
BACKEND_NAME = "myBackend"
BACKEND_VERSION = "0.1"
based = Based(BACKEND_NAME, BACKEND_VERSION)

# set callbacks
callbacks = [
    # based events
    (Callback.BASED_CONFIG, based_config),
    (Callback.BASED_INTERRUPT, based_interrupt),
    (Callback.BASED_QUIT, based_quit),

    # nuqql messages
    (Callback.QUIT, stop),
    (Callback.ADD_ACCOUNT, add_account),
    (Callback.DEL_ACCOUNT, del_account),
    (Callback.SEND_MESSAGE, send_message),
    (Callback.SET_STATUS, set_status),
    (Callback.GET_STATUS, get_status),
    (Callback.CHAT_LIST, chat_list),
    (Callback.CHAT_JOIN, chat_join),
    (Callback.CHAT_PART, chat_part),
    (Callback.CHAT_SEND, chat_send),
    (Callback.CHAT_USERS, chat_users),
    (Callback.CHAT_INVITE, chat_invite),
]
based.set_callbacks(callbacks)
based.start()

You can omit the callbacks you do not need in the callbacks list. In addition to the code above, you need to implement the callbacks you specify in your callbacks list.

The parameters passed to all callbacks are: the account, the callback and a callback-specific parameter tuple. The following example shows the send_message callback:

async def send_message(account, callback, params):
    """
    Send a message to another user.
    """

    dest, msg = params
    # do something with the message...

    return ""

The callbacks are only used for commands coming from nuqql. You must handle backend-specific events like receiving messages from other users in your backend code and optionally pass them to nuqql-based. The following example shows how incoming messages from other users can be passed to nuqql-based with Message.message() and receive_msg():

from nuqql_based.message import Message

def receive(account, timestamp, sender, destination, text):
    """
    Receive message from other user.
    """

    msg = Message.message(account, timestamp, sender, destination, text)
    account.receive_msg(msg)

Changes

  • v0.3.0:
    • Switch to asyncio and increase required Python version to >= 3.7
    • Remove copy of the buddy list from Account and rename callback UPDATE_BUDDIES to GET_BUDDIES to match new behaviour
    • Add callbacks:
      • HELP_WELCOME: welcome/help message for clients
      • HELP_ACCOUNT_ADD: help text for adding accounts
    • Add configuration option for filtering own messages
  • v0.2.0:
    • Use only one log file
    • Add "push-accounts" to configuration/command line arguments
    • Add more info messages and extend output of "help" command
    • Change callback parameter from account id to Account
    • Add tests
    • Cleanups and fixes
  • v0.1:
    • First release.

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